Bukin O. Multifrequency coherent radar sensing of subsurface environment

The object of study – electromagnetic signals, scattered by inhomogeneities of subsurface structure of the soil. The aim of the study is the scientific substantiation and development of the radiophysical l method of multifrequency coherent sub-surface radio sensing, which allows to evaluate the physical characteristics of the subsurface soil structure, to detect the change in the physical properties of this structure as a result of anthropogenic impact or natural geological processes, to identify individual objects related to elements of engineering structures and to diagnose their condition. Research methods and apparatus used in the work - methods have been used that are based on a combination of experimental sounding analysis with the use of developed georadars, methods and algorithms for digital processing of reflected sub-surface signal objects, based on model representations about the interconnection of the characteristics of scattered signals with characteristics subsurface soil structure and modern microprocessors, RF and microwave measuring devices. Theoretical and practical results - a method of radiophysical multifrequency coherent radar sensing of a subsurface environment is suggested, which can be used for soil structure analysis with frequency-dependent dielectric permeability of soil and weak radar contour of the cut of the soil. Innovation, the degree of implementation - the characteristics of the multi-frequency coherent sub-surface radar exceed the most well-known analogues (videoimpulse subsurface radars), the sub-surface radar designed for use in under-surface radio-sensing of wet soil to a depth of up to 20 m. Sphere (industry) of use - in engineering geophysics, during engineering, geological, reclamation, hydrogeological, ecological, archaeological works.